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| From | John Gordon <gordon@panix.com> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: fread/fwrite |
| Date | 2012-06-20 16:28 +0000 |
| Organization | PANIX Public Access Internet and UNIX, NYC |
| Message-ID | <jrsto8$abf$1@reader1.panix.com> (permalink) |
| References | <2a2da336-fa08-4bfa-95b4-47f99a126877@googlegroups.com> <jro8ns$5ub$1@reader1.panix.com> <94838e77-73a9-4ea1-92e2-2cf53d55b51b@j25g2000yqn.googlegroups.com> |
In <94838e77-73a9-4ea1-92e2-2cf53d55b51b@j25g2000yqn.googlegroups.com> billcun@suddenlink.net writes:
> Thank you very much John. I understand the strlen because we are
> dealing with a string. But what the -1 in your code for?
I assume you're asking about this line:
bytes_read = fread(buf, 1, sizeof(buf) - 1, fp);
The -1 allows room for a terminating null byte at the end of buf, because
buf is intended to be used as a string.
If we didn't intend to use buf as a string, the -1 would not be needed.
--
John Gordon A is for Amy, who fell down the stairs
gordon@panix.com B is for Basil, assaulted by bears
-- Edward Gorey, "The Gashlycrumb Tinies"
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fread/fwrite "billcun@nspam.invalid" <billcun@suddenlink.net> - 2012-06-18 13:45 -0700
Re: fread/fwrite Ian Collins <ian-news@hotmail.com> - 2012-06-19 09:28 +1200
Re: fread/fwrite Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-06-18 17:47 -0400
Re: fread/fwrite billcun@suddenlink.net - 2012-06-18 15:48 -0700
Re: fread/fwrite Ike Naar <ike@iceland.freeshell.org> - 2012-06-18 23:37 +0000
Re: fread/fwrite Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-06-18 21:56 -0400
Re: fread/fwrite billcun@suddenlink.net - 2012-06-19 04:54 -0700
Re: fread/fwrite Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-06-19 09:43 -0400
Re: fread/fwrite billcun@suddenlink.net - 2012-06-19 09:51 -0700
Re: fread/fwrite nick_keighley_nospam@hotmail.com - 2012-06-20 00:05 -0700
Re: fread/fwrite James Kuyper <jameskuyper@verizon.net> - 2012-06-20 06:45 -0400
Re: fread/fwrite nick_keighley_nospam@hotmail.com - 2012-06-20 04:20 -0700
Re: fread/fwrite tom st denis <tom@iahu.ca> - 2012-06-20 07:54 -0700
Re: fread/fwrite billcun@suddenlink.net - 2012-06-20 08:13 -0700
Re: fread/fwrite nick_keighley_nospam@hotmail.com - 2012-06-21 00:17 -0700
Re: fread/fwrite nick_keighley_nospam@hotmail.com - 2012-06-19 08:17 -0700
Re: fread/fwrite Mark Bluemel <mark.bluemel@googlemail.com> - 2012-06-20 01:05 -0700
Re: fread/fwrite billcun@suddenlink.net - 2012-06-20 08:17 -0700
Re: fread/fwrite Johannes Bauer <dfnsonfsduifb@gmx.de> - 2012-06-20 17:33 +0200
Re: fread/fwrite billcun@suddenlink.net - 2012-06-20 08:50 -0700
Re: fread/fwrite James Kuyper <jameskuyper@verizon.net> - 2012-06-21 07:45 -0400
Re: fread/fwrite Kenneth Brody <kenbrody@spamcop.net> - 2012-06-20 18:38 -0400
Re: fread/fwrite billcun@suddenlink.net - 2012-06-20 15:59 -0700
Re: fread/fwrite "BartC" <bc@freeuk.com> - 2012-06-21 00:24 +0100
Re: fread/fwrite Ian Collins <ian-news@hotmail.com> - 2012-06-21 11:40 +1200
Re: fread/fwrite Bill Cunningham <billcun@suddenlink.net> - 2012-06-20 16:47 -0700
Re: fread/fwrite Ian Collins <ian-news@hotmail.com> - 2012-06-21 11:56 +1200
Re: fread/fwrite Bill Cunningham <billcun@suddenlink.net> - 2012-06-20 17:11 -0700
Re: fread/fwrite Ian Collins <ian-news@hotmail.com> - 2012-06-21 12:28 +1200
Re: fread/fwrite Bill Cunningham <billcun@suddenlink.net> - 2012-06-20 17:51 -0700
Re: fread/fwrite Kenneth Brody <kenbrody@spamcop.net> - 2012-06-21 15:05 -0400
Re: fread/fwrite Ian Collins <ian-news@hotmail.com> - 2012-06-22 07:17 +1200
Re: fread/fwrite James Kuyper <jameskuyper@verizon.net> - 2012-06-21 16:01 -0400
Re: fread/fwrite Keith Thompson <kst-u@mib.org> - 2012-06-21 15:08 -0700
Re: fread/fwrite James Kuyper <jameskuyper@verizon.net> - 2012-06-21 18:36 -0400
Re: fread/fwrite Keith Thompson <kst-u@mib.org> - 2012-06-21 16:49 -0700
Re: fread/fwrite Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-06-21 01:30 +0100
Re: fread/fwrite Bill Cunningham <billcun@suddenlink.net> - 2012-06-20 17:51 -0700
Re: fread/fwrite Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-06-21 02:22 +0100
Re: fread/fwrite nick_keighley_nospam@hotmail.com - 2012-06-22 00:13 -0700
Re: fread/fwrite tom st denis <tom@iahu.ca> - 2012-06-21 04:22 -0700
Re: fread/fwrite Bill Cunningham <billcun@suddenlink.net> - 2012-06-22 12:14 -0700
Re: fread/fwrite nick_keighley_nospam@hotmail.com - 2012-06-21 00:33 -0700
Re: fread/fwrite Bill Cunningham <billcun@suddenlink.net> - 2012-06-20 16:27 -0700
Re: fread/fwrite nick_keighley_nospam@hotmail.com - 2012-06-21 00:21 -0700
Re: fread/fwrite Mark Bluemel <mark.bluemel@googlemail.com> - 2012-06-21 07:17 -0700
Re: fread/fwrite nick_keighley_nospam@hotmail.com - 2012-06-22 00:22 -0700
Re: fread/fwrite Bill Cunningham <billcun@suddenlink.net> - 2012-06-22 12:17 -0700
Re: fread/fwrite John Gordon <gordon@panix.com> - 2012-06-18 22:05 +0000
Re: fread/fwrite billcun@suddenlink.net - 2012-06-20 09:03 -0700
Re: fread/fwrite John Gordon <gordon@panix.com> - 2012-06-20 16:28 +0000
Re: fread/fwrite billcun@suddenlink.net - 2012-06-20 09:53 -0700
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